When calculating the velocity of a galaxy, using Doppler...

<< Back to: [sci.astro,sci.astro.seti] Contents (Astronomy Frequently Asked Questions) (0/9)

FAQS.ORG makes no guarantees as to the accuracy of the posts. Each post is the personal opinion of the poster. These posts are not intended to substitute for medical, tax, legal, investment, accounting, or other professional advice. FAQS.ORG does not endorse any opinion or any product or service mentioned mentioned in these posts.

<< Back to: [sci.astro,sci.astro.seti] Contents (Astronomy Frequently Asked Questions) (0/9)

[ Home | FAQ-Related Q&As | General Q&As | Answered Questions ]

Question by Joanne Hall
Submitted on 4/14/2004
Related FAQ: [sci.astro,sci.astro.seti] Contents (Astronomy Frequently Asked Questions) (0/9)
Rating:	Rate this question:
When calculating the velocity of a galaxy, using Doppler shift, do you use the formula v/c=delta lambda/lambda? Or do you work out the redshift using the formula z=delta lambda/lambda and then once you know the value of z, use that in the equation v=zc to calculate the velocity? I'm a bit confused as to when these equations can be used. Also, in each case, what does lambda stand for?

Your name or nickname:
If you'd like to create a new account or access your existing account, put in your password here:
Your answer: